Sifter.



E. V. WILLIAMS.

SIFTBR.

APPLICATION FILED SEPT. 20, 1911.-

Patented Jan. 21, 1913.

UNITED STATES regular OFFICE.

EDGAR V. WILLIAMS, 0] BONDA, NORTH CAROLINA, ASSIGNOR, TO WILLIAMS MILL MANUFACTURING COIP ANY, OF BONDA, NORTH CAROLINA, A COBPOBATIONQF Noa'rn canonma Specification of Letters Patent.

SIFTEB.

Application filed September 20, 1911. Serial No. 650,463.

To all whom it may concern Be it knhwn that I, EDGAR V. WIL IAMs, a citizen of the United States, residln at Ronda, in the county of Wilkes and tate of North Carolina, have invented new and useful Improvements in Sifters, of which the following is a specification.

The present invention relates to improvements in sifters for separating meal from bran.

In carrying out my invention it 1s my purpose to provide a sifter with supporting means which are adapted to impart both an oscillatory as well as a reciprocatory movement to the sifter, so that" the contents of the sifter will be gently agitated and the meal quickly separated from the bran.

In devices of this. class commonly employed, a reciprocatory movement only is imparted to the sifter so that the meal is hurriedly conveyed over the screens and a portion of the meal is discharged out with the bran, causing-a considerable loss in the 1 quantity of the meal.

I successfully overcome the above objections by producing a four motion system device Which embodies few parts, whereby the ground product is evenly distributed over the meshes of .the sieve; the motion imparted to the sieve being such as to cause all of the separate particles of the stock to contact. with each other, as well as with the mesh of the sieve to separate every particle of meal from the bran.

Itis also my purpose to provide a supporting means which maybe easily and quickly attached to a sifting screen of any ordinary construction, and which willimpart'the desired motions to the screen.

For a full understanding of my improvement, reference is to be had to the accompanying drawings, in which Figure .1 is a central longitudinal sectional view of a screen provided with my improvement. Fig. 2 is a detail sectional view of the end supporting members. Fig. 3 is a front elevation of the screen and the attachment therefor. Fig. 4 is an enlarged sectional view taken upon the line 44 of 50 ll n the drawing, the numeral 1 designates a screen which is substantially semi-circular in cross section, and which is provided with closed ends. Secured upon one of the said closed ends is a support 2, which comprises offset pivot member 4 which an upper attaching portion 3' having an passes through an opening 6 in a substantially L-shaped bracket 5. The opposite or forward end of the screen has secured thereto a plate 7, the latter being integrally formed with a longitudinally extending shaft 8 which is provided at its extremity with arounded bearing 10. This bearing is peripherally formed with an inclined flangell.

The numeral 12 designates the lowersection of a journal box. provided with an inclined angular depression for the reception of the flange 11. The section 12 is provided also with an extend- Patented Jan. 21, 1913.

The section 12 is ing'portion 13 which has its end provided with oppositely disposed arms 15 and 16, the said arms being connected with any suitable support.

The numeral 17 designates the upper section or top of the journal box, and which in turn is provided with an inclined angular depression that engages the flange 11 above that portion thereof received within the inclined depression of the journal box section 12. :The .top 17 is-"sustained u on the section 12 through the medium 0 removable elements such as headed screws -18.

Integrally formed upon the shaft 8 is a curved arm 9, whichhas a rounded end that is received within a suitable bearing 1?, the latter having connected thereto a pit-man rod .20. The rod 20 is pivotally, connected as at 21 with a collar 22. This collar surrounds a flat wheel 23, which is eccentrically connected with a shaft The. operation of the device is as follows. The eccentric wheel 22 upon revolving will cause the bearing 10 as well as its inclined annular flange 11 to revolve within its jour nal 100x12, and thus impart an oscillatory as well as a reciprocatory movement. It Wlll be noted that the particles of bran carryingthe meal within the sieve will be brought into contact with each other by this movement of the screen, the force of contact, however, being gentle so that the particles rubbing against each other will by the process of attrition separate the bran power v from the meal without causing the breaking 5:

of theparticles of the bran, and thus producing a high grade of meal.

It may be here stated that while the device has been described as a separator for meal from bran, it is evident that the'said device couldbe equally employed in grading flour, if desired.

Having thus fully described the said invention, what I claim is In a device for the purpose set forth, the combinatibn with a screen having closed ends and a pivoted bearing for one of the ends, of a shaft secured to the opposite end of the screen, said shaft having its extremity enlarged to provide a,v rounded bearing, the sai bearing being peripherally formed with an inclined flange a journal box for the bearing and flange, the said box including-atop, and'both the top and box being formed with an inclined annular depression for the reception of the flange, the axle being integrally formed wlth an out 'wardly curved arm, a pitman rod connected with the arm, a collar for the pitman and a shaft provided with an eccentrically connected wheel which engages with the collar,

all substantially as an or the purpose set forth.

In testimony whereof I aflix my signature in presence of two witnesses. 

